Touch Panel Or Lcd Assembly (Figure 5-7 And Figure 5-8) - GE PANDA Service Manual

Chapter 5: Repair Procedures
Electronic Enclosure Repairs
Caution: The replacement lithium ion battery must have heat shrink around the
battery to avoid possible battery damage if it is incorrectly installed.
Caution: Dispose of the battery in accordance with local toxic waste regulations.
5.4.4 Touch Panel or LCD Assembly
The touch panel assembly and LCD display cannot be accessed from the front of the unit. The electronic
enclosure box must be removed to access their securing hardware.
1. Remove the upper heater housing. Refer to
2. Loosen the 2 captive screws at the top of the enclosure's rear panel, then tilt the panel down and lift the
2 tabs at the bottom of the panel up out of the slots that they seat into.
3. Remove the 2 captive screws on either side of the lens using a 3 mm hex key.
4. Disconnect the 3 connectors on the probe panel interface board.
5. Use a 2 mm hex key to remove the 2 socket screws, split ring washers and flat washers that secure the
wire routing clips to the top of the enclosure.
6. Disconnect all electrical connections from the Heater Head Assy to the Electronic Enclosure, so the
Electronic Enclosure is no longer electronically connected.
7. Remove the ground wires attached to the top of the enclosure.
8. The bottom enclosure box is secured by two tabs that fit into slots in the lower heater housing. Use a
large screwdriver to lift the bottom edge of the enclosure while removing it from between the rails.
9. Loosen the 4 captive screws that secure the power board panel and tilt it down away from the unit. Pull
out the Power Board Panel and Outlet Panel as a pair, as far as electrical cables allow. Disconnect all
electrical cables that connect the pair to the Electronic Enclosure.
10. Disconnect the control board's 9 electrical connectors.
11. Loosen the 2 captive screws that secure the control board, and remove the board.
12. Use a miniature flathead screwdriver to pry the cap from the observation light knob. The cap is flush
with the knob surface.
13. Use a 9 mm nut driver to loosen the locking nut on the observation light knob.
14. Pull the observation light knob off the front, and disconnect the standby switch.
15. Use a 5.5 mm socket to remove the KEPS nut from the inside of the enclosure that secures the touch
panel. Disconnect the touch panel's electrical connectors and remove touch panel.
16. If replacing the LCD display, use a 2 mm hex key to remove the 4 button head screws, split washers and
flat washers that secure the display. Disconnect its 3 electrical connectors and remove the display.
5-12
(Figure 5-7 and Figure
section 5.3.1.
5-8)
Service Manual